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Discrete cosine transformation, Elliptic curve digital signature algorithm, Image authentication, imperceptibility, JPEG, Public key cryptography.

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Academic year: 2020

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Figure

Fig. 1: Watermark insertion in DCT domain
Fig. 3: Compromised Watermarked image and corresponding authentication matrix
Fig.5: Authentication blocks in different sizes. From left  8×8, 16×16, 24×24.
Table 2: SSIM values for RGB components of JPEG

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